| Redeemed Christian Church of GOD Spring of Water Ltd | Other services | 2024 |
| Redscare Ltd | Arts & recreation | 2014 |
| Reed Essex and Suffolk Commercial Ltd | Real estate | 2025 |
| Reed Residential Holdings Ltd | Real estate | 2015 |
| Reed Residential Online Ltd | Real estate | 2017 |
| Regional Properties (UK) Limited | Real estate | 2001 |
| Regiswell Limited | Households | 1993 |
| Regnacomputers Ltd | Wholesale & retail | 2025 |
| Reimage Consultancy Services Limited | Administrative & support | 2013 |
| Reimage Housing Limited | Real estate | 2022 |
| Reliable and Secure Property Management and Development Ltd | Real estate | 2021 |
| Reliable Contractors London Ltd | Construction | 2022 |
| Reliance Estates (Leigh) Ltd | Real estate | 2016 |
| Reliance Solutions Intl Ltd | Wholesale & retail | 2015 |
| Rendl Lighting Limited | Professional & scientific | 2022 |
| Renovativity Ltd | Construction | 2022 |
| Resholwen Solutions Limited | Information & communication | 2021 |
| Respect Personnel Ltd | Administrative & support | 2013 |
| Resuss Limited | Education | 2025 |
| Reverse Pitch Productions Limited | Professional & scientific | 2022 |
| Revive Peptides Limited | Wholesale & retail | 2026 |
| Revive Your Health Limited | Health & social care | 2025 |
| RGB Butterflies Ltd | Education | 2022 |
| RH Plus Limited | Construction | 2010 |
| Rhay Properties Limited | Real estate | 2026 |
| RIA Convenience Ltd | Wholesale & retail | 2023 |
| Ricardo's Cucina Italiana Ltd | Hospitality | 2026 |
| Ricardo's Kitchen Cucina Rustica Ltd | Hospitality | 2024 |
| Ricardo's Kitchen Limited | Hospitality | 2023 |
| Richplan Ltd | Real estate | 2025 |
| Rick Miller Limited | Health & social care | 2012 |
| Rimex Homes Ltd | Real estate | 2024 |
| Rish Solutions Limited | Information & communication | 2015 |
| Rkss Ltd | Real estate | 2025 |
| Rlha Limited | Households | 2025 |
| RLR Civil Ltd | Construction | 2021 |
| Rmpc Limited | Health & social care | 2020 |
| RN Craig Aesthetics Ltd | Health & social care | 2026 |
| Rochford Spice House Ltd | Hospitality | 2019 |
| Rocket Sandbox Ltd | Information & communication | 2025 |
| Romans Barbers 1 Ltd | Other services | 2023 |
| Room at the Back Ltd | Construction | 1996 |
| Rose-Sells-Uk Ltd | Wholesale & retail | 2023 |
| Roselinda's Services Ltd | Health & social care | 2013 |
| Rosesun Builders Ltd | Construction | 2024 |
| Rosesun Property Limited | Real estate | 2024 |
| Rosewood Financial Planning Limited | Professional & scientific | 2019 |
| Rosyfeetpodiatry Ltd | Health & social care | 2024 |
| RPS Sales Ltd | Manufacturing | 2012 |
| RSC Property Developments Ltd | Real estate | 2021 |
| Ruach Group Ltd | Information & communication | 2014 |
| Rudford Investments Ltd | Real estate | 2020 |
| Ruiu Transport Ltd | Transport & logistics | 2021 |
| Rulou Limited | Manufacturing | 2024 |
| Rushbazaar Ltd | Wholesale & retail | 2023 |
| Rutherford Management Company Limited | Real estate | 1993 |
| RWC Racing Limited | Arts & recreation | 2026 |
| Ryan Property Group Ltd | Construction | 2025 |
| Ryan-And-Co Ltd | Construction | 2021 |
| S & a Financials Ltd | Financial services | 2013 |
| S & J Co Management Limited | Hospitality | 2019 |
| S & J Contractors (South East) Ltd | Extraterritorial | 2010 |
| S & K Installations Ltd | Administrative & support | 2011 |
| S & R Corp Ltd | Hospitality | 2025 |
| S & S Gross Limited | Other services | 2018 |
| S C & Co Team Ltd | Administrative & support | 2025 |
| S M H 24 Limited | Hospitality | 2024 |
| S Zhou Ltd | Professional & scientific | 2024 |
| S.L.A.R AI Ltd | Information & communication | 2025 |
| S6 Fitness Ltd | Arts & recreation | 2025 |
| S7 Solutions Limited | Administrative & support | 2023 |
| Sabira Technologies Ltd | Information & communication | 2014 |
| Safe Accounting & Bookkeeping Services Ltd | Professional & scientific | 2023 |
| Safe AS Building Company Ltd | Construction | 2007 |
| Safe Escape Limited | Administrative & support | 2018 |
| Safe Home Living Ltd | Hospitality | 2022 |
| Safe on Ship Ltd | Information & communication | 2025 |
| Safefire Ltd | Professional & scientific | 2025 |
| Saint Helens 49 Limited | Real estate | 2026 |
| Saivi Properties Ltd | Real estate | 2022 |
| Sakuze (UK) Limited | Hospitality | 2017 |
| Salisbury Cafe Ltd | Hospitality | 2024 |
| Saltdean Lobster Limited | Hospitality | 2026 |
| Salvanzaf Limited | Wholesale & retail | 2024 |
| Samrodha Properties Ltd | Real estate | 2023 |
| Samson 2022 Ltd | Hospitality | 2022 |
| Samson Ijibadejo Security Ltd | Administrative & support | 2026 |
| Samsung Ltd | Other services | 2025 |
| Sam’S Grill Peri Peri Ltd | Hospitality | 2026 |
| Sand Financial Planning Limited | Financial services | 2010 |
| Sandagold Limited | Hospitality | 2026 |
| Sans Kitchen & Catering Ltd | Hospitality | 2023 |
| Saradan Media Ltd | Information & communication | 2012 |
| Sassy Amour Ltd | Wholesale & retail | 2014 |
| Savepoint Ltd | Professional & scientific | 2017 |
| SB Printing Ltd | Manufacturing | 2015 |
| SC Rentals Ltd | Administrative & support | 2013 |
| SCC Takeaway Limited | Hospitality | 2019 |
| Scrubix Ltd | Information & communication | 2026 |
| Seaforth Estates Ltd | Real estate | 2025 |